TY  - BOOK
AU  - Emery,Frederick Edmund
TI  - Systems thinking: selected readings 
T2  - Penguin modern management readings
U1  - 003 21
PY  - 1971///].
CY  - [Harmondsworth, Middlesex]: 
PB  - Penguin, 
KW  - System analysis
N1  - Includes bibliographies and index
ER  -